| 摘要 |
A developing unit includes: a cylindrical magnetic member having plural magnetic poles in a circumferential direction, the magnetic poles including a first pole attracting developer and a second pole not attracting developer; a developer holding member having the cylindrical magnetic member therein and conveying developer magnetically attracted by the cylindrical magnetic member on a surface thereof in a direction toward a predetermined area where developer is not attracted by a magnetic field caused by the second pole; a peeling member provided in the predetermined area and peeling off the developer attracted at an end portion of the developer holding member in an axial direction; and a second magnetic member provided on at least one of an upstream side and a downstream side of the peeling member, disposed in a position with a gap from the surface of the developer holding member and opposed to the predetermined area. |
